The princess was fought over by the prince because she came with a kingdom. Fun structure to play with.

If you haven't, seeking out the pre-Disney versions of stories is a fun experience. Helps color what these stories were intended to convey. Inferred by reading a few variants of them. Then comparing to what Disney produced. Provides a useful snapshop on the arrow of time. What direction your childhood was being nudged. Then once you know this, you can decide where you wish your human operating system to be nudged there. Or you walk away with a picture of what the cauldron of storytelling actually looks like, with a newfound ability to dip modern events into that cauldron to construct useful storytelling narratives of your own doing.

Popular Tales of the Norse. And Blue Faerie Book are a couple of them referenced by Tolkien in On Faerie-Stories.